e92e4035e0
Allow platform drivers to register with CPU cooling with their frequency mitigation functions. This allows the platform drivers to provide the callbacks to get the current ceil limit and to set the floor and ceil limits for the cpu. Change-Id: I47960b002bf1bce1cd588de2892de46793a95562 Signed-off-by: Lina Iyer <ilina@codeaurora.org> (cherry picked from commit 986fde1710c194bede83bf62eb542e6f05af3886) Signed-off-by: Mark Salyzyn <salyzyn@google.com> Bug: 154153737
93 lines
2.7 KiB
C
93 lines
2.7 KiB
C
/*
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* linux/include/linux/cpu_cooling.h
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*
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* Copyright (C) 2012 Samsung Electronics Co., Ltd(http://www.samsung.com)
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* Copyright (C) 2012 Amit Daniel <amit.kachhap@linaro.org>
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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#ifndef __CPU_COOLING_H__
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#define __CPU_COOLING_H__
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#include <linux/of.h>
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#include <linux/thermal.h>
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#include <linux/cpumask.h>
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struct cpufreq_policy;
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typedef int (*plat_mitig_t)(int cpu, u32 clip_freq);
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struct cpu_cooling_ops {
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plat_mitig_t ceil_limit, floor_limit;
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};
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#ifdef CONFIG_CPU_THERMAL
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/**
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* cpufreq_cooling_register - function to create cpufreq cooling device.
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* @policy: cpufreq policy.
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*/
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struct thermal_cooling_device *
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cpufreq_cooling_register(struct cpufreq_policy *policy);
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struct thermal_cooling_device *
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cpufreq_platform_cooling_register(struct cpufreq_policy *policy,
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struct cpu_cooling_ops *ops);
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/**
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* cpufreq_cooling_unregister - function to remove cpufreq cooling device.
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* @cdev: thermal cooling device pointer.
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*/
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void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev);
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#else /* !CONFIG_CPU_THERMAL */
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static inline struct thermal_cooling_device *
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cpufreq_cooling_register(struct cpufreq_policy *policy)
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{
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return ERR_PTR(-ENOSYS);
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}
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static inline struct thermal_cooling_device *
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cpufreq_platform_cooling_register(struct cpufreq_policy *policy,
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struct cpu_cooling_ops *ops)
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{
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return NULL;
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}
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static inline
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void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)
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{
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return;
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}
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#endif /* CONFIG_CPU_THERMAL */
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#if defined(CONFIG_THERMAL_OF) && defined(CONFIG_CPU_THERMAL)
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/**
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* of_cpufreq_cooling_register - create cpufreq cooling device based on DT.
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* @policy: cpufreq policy.
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*/
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struct thermal_cooling_device *
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of_cpufreq_cooling_register(struct cpufreq_policy *policy);
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#else
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static inline struct thermal_cooling_device *
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of_cpufreq_cooling_register(struct cpufreq_policy *policy)
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{
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return NULL;
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}
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#endif /* defined(CONFIG_THERMAL_OF) && defined(CONFIG_CPU_THERMAL) */
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#endif /* __CPU_COOLING_H__ */
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